CN100452692C - Method of transmission of data - Google Patents

Method of transmission of data Download PDF

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Publication number
CN100452692C
CN100452692C CN 200510070183 CN200510070183A CN100452692C CN 100452692 C CN100452692 C CN 100452692C CN 200510070183 CN200510070183 CN 200510070183 CN 200510070183 A CN200510070183 A CN 200510070183A CN 100452692 C CN100452692 C CN 100452692C
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data
set
checksum
transmission
pure
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CN 200510070183
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Chinese (zh)
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CN1697357A (en )
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埃德加·西格沃特
弗兰克·希勒
赫伯特·巴塞尔
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西门子公司
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    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0056Systems characterized by the type of code used
    • H04L1/0061Error detection codes
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L1/004Arrangements for detecting or preventing errors in the information received by using forward error control
    • H04L1/0041Arrangements at the transmitter end
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04LTRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00Arrangements for detecting or preventing errors in the information received
    • H04L2001/0092Error control systems characterised by the topology of the transmission link
    • H04L2001/0094Bus

Abstract

本发明涉及用于单通道地在自动化系统内的总线系统(1)上传输信息的方法和系统,利用其可在降低硬件花费的条件下实现满足IEC 61508安全级2的数据传输。 The present invention relates to a method and system for single channel (1) on the information transmitted in the bus system of the automation system, which may be implemented using the security level to meet the IEC 61508 data 2 transmission at a reduced hardware cost. 通过总线系统(1)传输的信息包括纯数据,其在处理单元(4)中按照第一数据集(2)和第二数据集(3)的形式双通道地出现,该第二数据集(3)至少与第一数据集(2)不同类型。 Via a bus system (1) comprises a pure data transmission information, which (4) in accordance with a first set of data (2) and a second data set (3) is in the form of a double channel appears processing unit, the second data set ( 3) at least a set (2) different types of data from the first 处理单元(4)从两个数据集(2,3)中产生适合于单通道地在总线系统(1)上传输的传输电文(5),其中,-在传输电文(5)的第一数据区(6)中放置按照第一数据集(2)的形式出现的纯数据,以及-在传输电文(5)的第二数据区(7)中放置在第二数据集(3)的基础上产生的校验和。 The processing unit (4) is generated from the two data sets (2, 3) suitable for transmitting the message (5) on the single channel transmitted (1) in the bus system, wherein - in a first data transfer message (5) region (6) is placed in a first data set according to the data of pure (2) of the form, and - placing (7) on the basis of a second data set (3) of the message transmission (5) a second data region and checksum generation.

Description

用于数据传输的方法 A method for data transmission

技术领域 FIELD

本发明涉及用于单通道地在总线系统上传输信息的一种方法和一种系统, 其中,待传输的信息包括纯数据,该纯数据按照第一数据集和第二数据集的形式双通道地出现,该第二数据集至少与第一数据集不同类型。 The present invention relates to a method and a single channel transmitting a system information on a bus system, wherein the information comprises a pure data to be transmitted, the two-channel data in the form of pure first data set and second data set for appears, at least the second data set from the first set of data types.

背景技术 Background technique

这种系统和方法例如在其中引导可靠性重要的数据的工业自动化系统中得到使用。 Such systems and methods in which, for example, the reliability of the guide important industrial automation system data to be used.

除了其它的之外,公知的防故障系统例如在标准IEC 61508 "Functional Safety of Electrical/Electronic/Programmable Electronic Safety-Related Systems"中进行了描述。 Among other things, known fail-safe system, such as in the standard IEC 61508 "Functional Safety of Electrical / Electronic / Programmable Electronic Safety-Related Systems" are described. 按照IEC 61508必须在防故障自动化系统中采取避免故障的措施并且对应于安全综合水平(SIL)的安全级别进行故障管理。 Measures must be taken to avoid failure in accordance with IEC 61508 in a fail-safe automation system and corresponds to the overall safety level (SIL) security level fault management.

为了在总线系统上传输可靠性重要的数据,要产生电文,该电文除了纯粹待传输的纯数据之外还包括校验和,根据该校验和接收器可以检验被传输的纯数据中可能的错误。 In order to transmit important data on the reliability of the bus system, to generate text, the text in addition to the pure data to be transmitted purely further including the checksum, the checksum according to the test receiver may be pure data transmission possible in error. 校验和必须始终与纯数据匹配。 The checksum must always match the pure data. 如果不存在这种一致性, 则其向接收器表明出现了错误。 If there is no such consistency, it indicates that an error has occurred to the receiver. 为了传输该校验和例如进行所谓的循环冗余校 In order to transmit the checksum, for example, so-called cyclic redundancy

验(CRC )。 Test (CRC).

为了在自动化系统中实现按照正C 61508的安全级别2,将所有可靠性重要的数据、特别是IO数据进行加倍地引导。 In order to achieve that all important data reliability in positive C 61508 security level 2 automation system, in particular the IO data to guide doubly. 为了在总线系统上传输数据,按照现有技术由双通道的通信驱动装置产生其中使用两个通道中的数据的电文。 For data transmission on the bus system, the data used to generate two channels of the communication message by the drive means wherein a two-channel according to the prior art. 为此,通过由两个通道之一的控制器准备数据,并且借助于第二控制器根据另一个通道的数据计算并提供校验和。 For this reason, by the controller prepares data of one of the two channels, and by means of the second controller calculates a checksum based on the data and provide another channel. 当数据离开通信驱动装置进入总线时,通过对校验和以及纯数据的一致性的检验、根据该电文可以识别在这两个相互冗余的控制器中出现的错误。 When the data into the drive means away from the communication bus, through the examination of the consistency and the pure data and parity, based on the error message may be identified in the two mutually redundant controller. 通过这种方式,尽管双通道数据只能在硬件技术上的单通道系统上显示/存在,却可以在通信协议中实现安全级别2。 In this manner, although only two-channel data display / present in single-channel systems on the hardware technology, but the security level 2 may be implemented in the communication protocol.

发明内容 SUMMARY

本发明要解决的技术问题是,提供一种方法和一种系统,利用其在降低硬 The present invention is to solve the technical problem is to provide a method and a system, which is reduced by using a hard

件花费的条件下实现满足IEC 61508安全级别2的数据传输。 Which satisfies the IEC 61508 data transmission security level 2 under conditions member takes.

所述技术问题是通过一种用于在自动化系统内的总线系统上传输信息的方法解决的,其中,通过总线系统传输的信息包括纯数据,该纯数据在处理单元中按照笫一数据集和第二数据集的形式双通道地出现,该第二数据集至少是与第一数据集不同类型的,并且该处理单元从两个数据集中产生适合于单通道地在所述总线系统上传输的传输电文,其中, The technical problem is a method for transmitting information on a bus system within the automation system by solving for a, wherein, through the information bus system comprises a pure data transmission, the data-processing unit in accordance with a set of data Zi and form a second data set dual appears, at least the second data set is a first data set of a different type, and the processing unit generates the two data sets is adapted to be single-channel transmission on the bus system message transmission, wherein,

-在该传输电文的第一数据区中放置按照第一数据集的形式出现的純数据,以及 - placed in the form of pure data appears in the first data set of a first transmission message data area, and

-在该传输电文的第二数据区中放置在第二数据集的基础上产生的校验和。 - placed in the second data area of ​​the message transmitted in the second data set based on the generated checksum.

此外,上述技术问题还通过一种在具有总线系统和处理单元的自动化系统中传输数据的系统解决,其中,该处理单元用于从第一数据集和第二数据集中产生适合于单通道地在总线系统上传输的传输电文,其中,待传输的信息包括纯数据,该纯数据在处理单元中按照第一数据集和第二数据集的形式双通道地出现,该第二数据集至少与第一数据集不同类型,其中, Further, the above-mentioned technical problem is also solved by means of a system having a bus system and a processing unit in the automation system for transmitting data, wherein the processing unit is adapted for generating a single channel in the first data set and second data set transmitted message transmitted on the bus system, wherein the information comprises a pure data to be transmitted, the pure data appears in the form of two-channel first data set and second data set in the processing unit, the second data set of at least a set of different types of data, wherein,

-在该传输电文的第一数据区包括按照第一数据集的形式出现的纯数据, - a first data region in the transport messages include pure data present in the form of a first data set,

以及 as well as

-在该传输电文的第二数据区包括在第二数据集的基础上产生的校验和。 - in the second data area of ​​the message transmission comprises generating a second data set on the basis of the checksum. 按照本发明的方法使得可以利用仅仅一个处理单元产生保证安全的传输电文,尽管如此仍然实现了安全级别2。 Such that the method according to the invention may utilize transmission processing unit generates a message only to ensure safety, nevertheless to achieve a safe level 2. 这是这样实现的:直到产生电文,不仅加倍地引导可靠性重要的数据,而且还以两种不同的表示形式来引导。 This is implemented as follows: until a message, not only doubly important to guide the reliability of data, but also in two different representations to boot. 如果数据直到产生电文为止一直按照两种不同的表示形式出现,则可以将其在一个共同处理单元、例如处理器中共同进行引导。 If the data until a message has been so far appear in two different forms of representation, it can be in a co-processing unit, for example, co-processor to boot. 存储或处理错误(例如在一个比特位置上命令"倒置"没有倒置)可以通过纯数据的不同类型的表示形式得到识别,而不需要为两个表示形式提供各自的处理单元。 Storing or processing error (such as a command "upside down" in a bit position is not inverted) can be identified by different types of representations of pure data without the need to provide a respective processing unit is a two representation.

为了产生传输电文,将纯数据通过第一数据集表示而在第二数据集的基础上形成校验和。 In order to generate a transmission message, the data-checksum is formed based on the second set of data represented by the first data set. 因此,本发明的方法使得可以利用单通道硬件按照安全级别2 形成校验和。 Thus, the method of the present invention makes it possible to use a single channel and a checksum is formed according to the hardware security level 2.

该方法的一种优选的实施方式的特征在于,两个数据集之一对应于纯数据的按比特倒置的表示,并且如下产生所述校验和:从倒置的纯数据形成第二校 A preferred feature of the method embodiment in that one of the two data sets corresponding to a bit-inverted indicates pure data, and produces the check and the following: a pure form from the second correction data inversion

验和,并将该第二校验和与一个其中所有比特被置为l且其长度根据纯数据确定的比特流的校验和进行异或运算。 And inspection, and a checksum and the second in which all bits are set to XOR checksum l and has a length determined based on pure data bit stream.

待传输的纯数据的两种表示类型在该实施方式中这样给出:即,将纯数据按照正常形式和按照倒置的形式分别引导一次。 Two kinds of pure data to be transmitted so that the type of representation is given in the present embodiment: i.e., the form and the normal form of an inverted guide according to a pure data, respectively. 纯数据的校验和的形成在倒置的数据的基础上进行。 Checksum data in the form of pure data on the basis of inverted. 为此,首先建立倒置的纯数据的校验和。 To do this, first create an inverted pure data checksum. 此外,建立一个其中所有比特被置为1且其长度根据纯数据确定的比特流的校验和。 Further, all of which establish a bit is set to 1 and the length thereof is determined based on a pure stream of data bits and checksum. 然后, 将该比特流的校验和与倒置的纯数据的校验和进行异或(XOR)运算。 Then, pure data checksum and the inverted parity bit stream and the exclusive OR (XOR) operation. 该XOR 运算的结果最终是实际纯数据的校验和。 The final result of the XOR operation actual data checksum pure.

这种方式具有这样决定性的优点:即,被双倍引导的纯数据直到产生电文为止从不在处理单元中以同样的表示形式出现。 This embodiment has the decisive advantage: That is, a double guided up until a pure text data never occur in the same representation in the processing unit. 例如,假如为了产生纯数据的校验和将被倒置的纯数据倒置并且然后从中确定校验和,则该可靠性重要的数据将在一定的时间长度上在两个通道上以同样的形式出现。 For example, if the checksum in order to generate the pure data to be inverted and then inverted net data and the checksum, the reliability of the important data is determined therefrom will appear on a certain length of time in the two channels in the same form . 由此,可能无法识别一系列可能的存储和处理错误(例如命令"倒置"在一个比特位置上没有倒置)。 Thereby, may not recognize a range of possible storage and processing error (such as a command "upside down" is not inverted on a bit position). 优选地,分别利用循环冗余校验(CRC)建立各校验和。 Preferably, each checksum were established using cyclic redundancy check (CRC). 这里,在建立校验和时既可以使用正常的CRC,也可以使用附带有零的CRC的变形。 Here, in the establishment checksum can either use the normal CRC, the CRC can also use the deformation of incidental zero.

为了实现所描述的方法步骤,可以将微控制器作为处理单元使用。 In order to implement the method steps described, the microcontroller may be used as the processing unit. 或者, 也可以通过连接的移位寄存器以硬件技术实现CRC算法。 Alternatively, the CRC algorithm may be implemented in hardware technology connected through the shift register.

该方法的一种典型的应用领域是工业自动化系统中的安全数据传输,其中纯数据是对于可靠性重要的数据。 A typical field of application of this method is secure data transmission in industrial automation systems, which is important for pure data reliability data.

附图说明 BRIEF DESCRIPTION

下面对照附图所示的实施方式对本发明作进一步的描述和说明。 The present invention is further described and illustrated embodiments below with reference to the embodiment shown in the drawings. 图中: 图1示出用于安全数据传输的方法的原理图,以及 The drawings: Figure 1 shows a schematic diagram of a method for secure data transmission, and

图2示出借助单通道通信驱动装置从以双通道出现的数据中产生传输电文的算法。 Figure 2 illustrates a message transmitted from the data to produce two-channel single-channel communication occurs by means of the drive means algorithm.

具体实施方式 detailed description

图1示出用于通过总线系统l进行安全数据传输的方法的原理图。 Figure 1 shows a schematic diagram of a method for secure data transmission via a bus system l. 在处理单元4中,通过总线系统待传输的纯数据按照其不同的两种表示类型的形式以数据集2、 3双通道地出现。 The processing unit 4, pure data to be transmitted via the bus system to the data set 2, three pairs of channels to appear in two forms that represent different types. 在此,例如可以是纯数据的正常表示和纯数据的倒 Here, for example, it may be an inverted representation of normal and pure data pure data

置表示。 Set representation. 数据集2、 3例如由两个相互独立测量量相同的的传感器来采集,并通过分离的数据通道被送至处理单元4。 Data set 2, 3, for example by two independent measurements of the same sensor to collect, and the processing unit 4 is fed by a separate data channel.

处理单元4将两个数据集2、 3结合为一个通过总线系统1发送的单通道传输电文5。 The data processing unit 4 two sets 2, 3 in conjunction with a single-channel transmission of message 5 transmitted via the bus system. 为此,将通过第一数据集2表示的纯数据放置在传输电文5的第—数据区6。 For this purpose, the pure data represented by the first data set 2 is placed in the transmission of message 5 - the data region 6. 而该纯数据的校验和则根据第二数据集3、即倒置的純数据来确定并将被放置在传输电文5的第二数据区7。 While the pure data and parity are 3, i.e., pure inverted data is determined according to the data set and a second transfer message is placed in the second data region 75 in. 按照这种方式,两个通道的数据集2、 3均参与了形成传输电文5。 In this manner, two channels of data sets 2, 3 are involved in the transmission of the message 5 is formed. 通过在两个通道中纯数据的不同表示类型,通信驱动器可以在单通道硬件中、特别是在使用单微控制器的条件下实现。 Achieved under conditions represent two different types of channels pure data, the driver may be in the single channel communications hardware, especially when using a single microcontroller.

图2示出借助单通道通信驱动装置(例如在处理单元4上实现的那样)从双通道存在的数据中产生传输电文5的算法表示。 Figure 2 shows a single-channel communication via a drive means (e.g., as implemented in the processing unit 4) is generated from the transmitted message data is present in the dual channel algorithm 5 FIG. 对于可靠性重要的纯数据, 一方面按照正常的形式ND、另一方面还按照倒置的形式INV(ND)出现。 Important for pure data reliability, an aspect according to the normal form of ND, on the other hand also appear in inverted form INV (ND).

在第一方法步骤8中,借助循环冗余校验(CRC )从倒置的纯数据INV(ND) 中确定校验和FCS(INV(ND))。 In a first method step 8, by means of a cyclic redundancy check (CRC) checksum is determined FCS (INV (ND)) from the inverted net data INV (ND) in. 在此以及下面的描述中,将通过循环冗余校验(CRC )确定的校验和缩写为FCS()(帧校验序列)。 In this and the following description, the Cyclic Redundancy Check (CRC) checksum to determine the FCS abbreviated as () (frame check sequence).

在第二方法步骤9中,将倒置的纯数据的校验和FCS(INV(ND))与一个其中所有比特被置1的比特流BS的校验和FCS(BS)进行异或运算(XOR)。 In a second method step 9, the inverted data-checksum FCS (INV (ND)) and a bit is set in which all of the bit stream BS 1 and the FCS checksum (BS) performs an exclusive OR operation (XOR ). 比特流BS的长度取决于纯数据ND的长度。 The length of the bit stream BS depends on the length of the pure data ND. 作为该XOR运算9的结果形成了纯数据的校验和FCS( ND)。 As a result of the XOR operation 9 is formed of pure FCS checksum data (ND).

由此,为了从倒置的纯数据INV(ND)中产生纯数据的校验和FCS(ND),不对倒置的纯数据INV(ND)进行倒置。 Accordingly, in order to produce pure FCS checksum data (ND) from the inverted net data INV (ND), the data is not inverted pure INV (ND) for inversion. 这样的方法步骤起到如下作用:在处理单元4中两个通道的数据按照同样的表示形式保持一定的时间,并因此而可能出现不可识别的存储器或者处理错误的危险。 Such a method step function as follows: held for some time in the same representation of the data processing unit 4 in the two channels, and therefore unrecognizable memory or processing error may occur the risk.

在第三方法步骤10中,将从倒置的纯数据INV(ND)中产生的校验和FCS(ND)附加在纯数据ND上,以便产生传输电文5。 In a third method step 10, from the inverted net data INV (ND) generated in the checksum FCS (ND) ND added to the pure data, in order to generate a transmission telegram 5. 该传输电文5通过总线系统1进4于传输。 The message transmitted by a bus system 5 1 4 into the transmission.

接收器U接收与通过总线系统1防故障传输的传输电文5对应的第二传输电文12。 Receive a second transmission unit U receives via a bus system 5 corresponds to a fail-safe transmission of messages transmitted message 12. 在第四方法步骤13中接收器建立传输电文12中的纯数据卩f交验和, 并且将该校验和与在传输电文12中放置的校验和进行比较。 In the receiver 13 to establish a fourth method step of transmitting the data message in pure Jie 12 f and inspection, and the checksum and compares the checksum 12 placed in the transmission message. 在两个校验和一致的条件下,接收器可以认为数据是没有错误地通过总线传输的。 In the two checksums are identical conditions, the receiver may erroneously think that there is no data transmitted over the bus. 此外,校验和的一致性表明待传输的安全重要的数据既通过纯数据ND也通过倒置的純数据INV(ND)得到正确的描述。 Further, the security check and indicate the consistency of the important data to be transmitted through both the correct data-ND also described by inverting the data-INV (ND).

总之,本发明涉及用于将信息单通道地在自动化系统内的总线系统1上进 In summary, the present invention relates to a single channel for communicating information to the bus system within an automation system motivated

行传输的一种方法和一种系统,利用其在降低硬件花费的条件下实现满足正c Transmission line to a method and a system with which to achieve under reduced hardware cost satisfies n c

61508安全级别2的数据传输。 61508 security level 2 data transmission. 通过总线系统1传输的信息包括纯数据,该纯数据在处理单元4中按照第一数据集和第二数据集的形式双通道地出现,该第二数据集至少与第一数据集不同类型。 1 through the information transmission system comprises a data-bus, which appeared pure two-channel data in the form of a first data set and second data set in the processing unit 4, the second data set with at least a first set of data types. 该处理单元4从两个数据集2、 3中产生适合于单通道地在总线系统1上传输的传输电文5,其中, The processing unit 42, adapted to generate a single channel 3 in the transmission message 5 transmitted on a bus system, wherein from the two data sets,

-在传输电文5的第一数据区6放置按照第一数据集2的形式出现的纯数据,以及 - placed in the form of pure data appears first data set in the transmission 2 region 5 of the first data telegram 6, and

-在传输电文5的第二数据区7放置在第二数据集3的基础上产生的校验 - verification message generated in the transmission data of the second region 5 is placed in a 7 second data set based on the 3

和o And o

Claims (8)

  1. 1. 一种用于在自动化系统内的总线系统(1)上传输信息的方法,其中,通过所迷总线系统(1)传输的信息包括純数据,该純数据在处理单元(4)中按照第一数据集(2)和第二数据集(3)的形式双通道地出现,该第二数据集(3)是与第一数据集(2)不同类型的,并且该处理单元(4)从两个数据集(2, 3 )中产生适合于单通道地在所述总线系统(1 )上传输的传输电文(5 ),其中,-在所述传输电文(5)的第一数据区(6)中放置按照第一数据集(2)的形式出现的纯数据,以及-在所述传输电文(5)的第二数据区(7)中放置在第二数据集(3)的基础上产生的校验和,其中,所述两个数据集(2, 3)之一对应于所述纯数据的按比特倒置的表示,并且如下产生所述校验和:从按比特倒置的纯数据形成第二校验和,并将该第二校验和与这样一个比特流的校验和进行异或运算并且将从 1. A method for the automated system in a bus system (1) on the transmission information, wherein the bus system by the fan (1) comprises a pure data information transmission, the data-processing unit in accordance with (4) in the form of a first data set (2) and a second data set (3) dual channel appears, the second data set (3) with the first set of data (2) of different types, and the processing unit (4) adapted to generate a single channel (5), wherein the message transmitted on the transmission (1) of the bus system from the two data sets (2, 3) - (5) in a first data area of ​​the transmission telegram placing pure data (2) is of the form and in accordance with a first set of data (6), - placing (7) in the message transmission (5) a second set of data of the second data base region (3) generating a checksum, wherein one of the two data sets (2, 3) corresponds to a bit-inverted representation of the net data and the checksum is generated as follows: from pure bitwise inverted a second data forming a checksum and the second checksum with the checksum and such a bit stream from the XOR and 产生的校验和作为最终的校验和,即,该比特流中所有比特被置为1且该比特流的长度是根据该纯数据确定的。 Produced as a final check and checksum, i.e., all bits of the bit stream and a length is set to 1 the bit stream is determined based on the pure data.
  2. 2. 根据权利要求1所述的方法,其特征在于,利用循环冗余校验建立校验和。 2. The method according to claim 1, characterized in that, to establish a checksum using a cyclic redundancy check.
  3. 3. 根据权利要求1所述的方法,其特征在于,采用微控制器作为所述处理单元(4)。 3. The method according to claim 1, wherein the controller as a micro processing unit (4).
  4. 4. 根据权利要求1所述的方法,其特征在于,该方法用于在工业自动化系统中的安全数据传输,其中,所述纯数据是可靠性重要的数据。 4. The method according to claim 1, characterized in that the method for secure data transmission in an industrial automation system, wherein the pure data is important to the reliability of the data.
  5. 5. —种用于在自动化系统中传输信息的系统,该自动化系统具有总线系统(1)和处理单元(4),其中,所述处理单元(4)用于从第一数据集(2)和第二数据集(3)中产生适合于单通道地在所述总线系统(1)上传输的传输电文(5),其中,传输的信息包括纯数据,该纯数据在处理单元(4)中按照所述第一数据集(2)和第二数据集(3)的形式双通道地出现,该第二数据集(3)是与第一数据集(2)不同类型的,其中,-所述传输电文(5)的第一数据区(6)包括按照所述第一数据集(2)的形式出现的纯数据,以及-所述传输电文(5)的第二数据区(7)包括在所述第二数据集(3)的基础上产生的校验和,其中,所迷处理单元(4)用于建立所述第二数据区中放置的校验和,其中所迷第一数据集(2)和第二数据集(3)之一对应于所述纯数据的按比特倒置的表示,并且如下产生所述校验 5. - species for transmitting system information, the automation system having a bus system (1) and a processing unit (4) in an automated system, wherein the processing unit (4) for the first data set (2) and generating a second data set (3) is adapted to transmit messages in a single channel transmitted on (1) the bus system (5), wherein the information comprises a pure data transmission, the data-processing unit (4) in accordance with said first set of data (2) and a second data set (3) appears in the form of two-channel, the second data set (3) with the first set of data (2) of different types, wherein - the message transmission (5) a first data region (6) comprising a pure data appears in the form of the first data set (2), and - transmitting the message (5) a second data area (7) comprising generating on the basis of the second data set (3) of the checksum, wherein the processing unit of the fan (4) for establishing said second data zone placed in the checksum, wherein the first fan one data set (2) and a second data set (3) corresponds to a bit-inverted representation of the net data and the checksum is generated as follows :从按比特倒置的纯数据形成第二校验和, 并将该第二校验和与这样一个比特流的校验和进行异或运算并且将从中产生的校验和作为最终的校验和,即,该比特流中所有比特被置为1且该比特流的长度是根据该纯数据确定的。 : Forming a second checksum and the second checksum in with such a bit stream from the data-in bits and inverted XOR generated from a parity check and as a final check and , i.e., all bits of the bit stream and a length is set to 1 the bit stream is determined based on the pure data.
  6. 6. 根据权利要求5所述的传输信息的系统,其特征在于,所述处理单元(4 ) 用于分别利用循环冗余校验建立各校验和。 The information transmission system as claimed in claim 5, characterized in that the processing unit (4), respectively, for establishing respective checksum using a cyclic redundancy check.
  7. 7. 根据权利要求5所述的传输信息的系统,其特征在于,将所述处理单元(4)实施为微控制器。 The information transmission system as claimed in claim 5, characterized in that the processing unit (4) is implemented as a microcontroller.
  8. 8. 根据权利要求5所述的传输信息的系统,其特征在于,所述传输信息的系统用于在工业自动化系统中进行安全数据传输,其中所述纯数据是可靠性重要的数据。 8. The system for transmitting information according to claim 5, characterized in that the information transmission system for secure data transmission in an industrial automation system, wherein the pure data is important to the reliability of the data.
CN 200510070183 2004-05-10 2005-05-10 Method of transmission of data CN100452692C (en)

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